Thread-cutting temple for looms



Nov. 11 1924. 1,514,636

E. s. STIMPSON THREAD CUTTING TEMPLE FOR LOOMS Filed May 17 1924 Fig.1.

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' Edward ssfimpson m by @MkW Aflys.

Patented Nov. 11, 1924.

UNITED STATS EDWARD S. ST'IMPSON, 0F HOPEDALE, MASSACHUSETTS, ASQIGNOB' PO'RATION, OF 'HOPEDALE, 'DEASSACHUSETTS, A CORPORATION tense Fries."

T0 DRAPER COR- OF MAINE.

TIIREAD-CUTTING TEMPLE FOR LOOMS.

Application filed May 1'7, 1924. Serial No. 714,150.

1 '0 all whom it may concern:

Be it known that I, EDWARD S. S'rIMPsoN. a citizen of the United States, and resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Thread-Cutting Temples for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to improvements in thread cutting temples for looms and the object of the invention is to prov1de a construction which shall secure an eifective co operation between the movable cutter memher and the fixed cutter member.

The object of the invention is further to provide a construction which shall minimize the wear of the cutter members and prevent any wear that does take place from disturbing the accurate and effective character of the cutting operation.

The invention in some respects is subs diary to that disclosed in the application Ser. No. 714,162 of Harry A. Davis filed concurrently herewith and in that respect a further object of the invention 1s to pro vide in the combination a novel form of fixed cutter member adapted to co-operate with the movable cutter member in securing the desired results.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

In the drawings:

Fig. 1 is an end elevation of a temple embodying a preferred form of. the mvention. p

Fig. 2 is a view in vertical cross section taken on the line 22 of Fig. lbut with the movable cutter member shown in side elevation.

Fig. 3 is a view partially brokenaway and partially in horizontal cross section of the same construction.

The general construction and operation of a loom temple and temple thread cutterare so well known and familiar to those skilled in the weaving art thatit is onlynecessary to describe and illustrate those features with which the present invention is particularly concerned.

The type of thread cutting temple herein illustrated is that shown in the patent to E. S. Stimpson, No. 1,366,084, granted January 18, 1921, but the invention is applicable to other types of temples. The broad idea of the means for securing the accurate guidmg and movement of the movable cutter member embodied in the present invention is also disclosed in the application of Harry A. Davis filed concurrently herewith.

In the construction illustrated the bar of the usual temple the forward end of which is shown at 1 has formed thereon and secured thereto the temple head comprising the pod 2, the cap 3 with the enclosed toothed roll 4 j ournaled on the stubs 5 and the entire bar and head being moved forwardly when the lay strikes the depending heel 6.

The temple head is provided with a slot 7 extending fore and, aft adjacent the end of the toothed roll 1 to provide for the cut- I ting mechanism. In the present invention the wall 8 of this slot which is further from the roll 4 is formed fiat throughout its length in order to form a flat guide and accurate bearing for the movable cutter member.

The cutting mechanism comprises as usual two elements, viz, a movable cutter member moved forwardly by the lay and rearwardly by a spring and a relatively fixed cutter member with which the movable member co-operates in severing The movable cutter member is conveniently formed throughout. of cast iron as a single casting and provided with a chilled rearward end upon which is formed the cutting edge as disclosed in the said patent to S-timpson. As illustrated this movable cutter member presents the usual body portion 9 presenting at the rear end the chilled portion 10 of hook shape provided with an inclined cutting edge 11 and the usual tail 12 at the forward end. The usual spring 13 coiled about the stud lt on the temple bar 1 and aboutthe stud 15 on the tail l2 acts to project the movable cutter member rearwardly.

In this invention as in that of the aforesaid application o-fvDavis the body of this movable cutter member presents throughout a fiat side as shown in Figs. 2 and 3 which bears throughout against the fiat wall 8 of the slot 7 in the temple head, only the extreme rear hook end 10 being relieved the filling.

at the side toward the wall 8 to prevent the filling from being pinched as the cutter member is moved forwardly. It will thus be seen that with the movable'cutter member bearing against the flat wall 8 accurate guiding surfaces are provided which insure the accurate movement of the movable cutter member with a minimum amount of wear.

In the present invention the relatively fixed cutter member is a flat steel blade having its upper end 16 bent normally or at right angles to the body 17 so that this end 16 forms av supporting shank by means of which the blade is secured rigidly to the head of the temple with the body depending in the front end of the slot and spaced from the wall of the slot nearer the roll 4. To effect this the shank 16 of the blade is provided with a slot 18 which fits over a screw threaded stud 19' mounted in the temple head anda nut 20 on the stud 19 holds the shank in position. Preferably also the head of the temple is provided with a boss or elevated portion 21 having at the front a straight guiding edge against which the shank 16 of the blade abuts and by which the blade is accurately positioned. The slot 18 also provides for the adjustment of the blade relatively to the wall of the slot and towards and from the movable cutter member.

This fixed blade is made of hardened steel but has a certain amount of inherent resiliency and the bend in the blade between its shank and body is of sufficient radius to increase the resilient action ofthe blade. In order that the forward cutting edge 22 of the blade may under all circumstances cooperate with the cutting edge 11 of the movable cutter member the body 17 of the blade is preferablyarranged to stand diverging slightly from the adjacent wall of the slot 7 toward the front as will be seen from Figs. 1 and 3. This angular relation of the blade may be secured in any desired way but in the illustrative case is secured by bending the body of the blade slightly with respect to the shank.

The important feature of the fixed cutter blade is that it act-s to press yieldingly by reason of its inherent resiliencya-nd the manner in which it is mounted against the movable cutter member and thus to force and maintain the movable cutter member against the flat wall 8 of the slot. The adjustment provided for the shank of the blade on the temple head enables: this pressure to be varied as desired.

The movable cutter member, it will be remembered, is actuated at each beat up of the lay because each time the lay beats up it strikes against the depending heel 12 of the movable cutter member and carries the movable cutter member forwardly against the tension of the spring 13. As the lay retracts the spring 13 forces the movable cutter member rea-rwardly. The movement thus imparted to the movable cutter member is a combined backward and forward and rocking movement.

In this invention the vertical cutter blade 17 acts to press yieldingly against the movable cutter member at all times because of its inherent resiliency and thus causes the movable cutter member during its forward and backward and rocking movements to maintain its flat side in contact with the flat wall 8 of the slot in the temple head. These two flat surfaces being in contact causes the movable cutter member to be guided accurately and reduces the wear on the movable cutter member and the temple head to a minimum and maintains an effective cooperation between the two cutter members themselves thus insuring the effective severing of the filling when brought into the field of action of the'cutting mechanism.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent, is:

1. A thread cutting temple comprising a head slotted fore and aft adjacent to the end of the roll, the wall of the slot further from the roll being fiat throughout, a movable cutter member mounted to rock and to move forwardly and backwardly in said slot and presenting a flat side to bear throughout said movements on the flat wall of the slot, a flat steel blade having one end bent normally to the body to form a supporting shank, and means for securing the shank of said blade rigidly to the head with the body depending'in the front end of the slot and spaced from the wall nearer the roll tocause the blade by its own resiliency to press yieldingly against the movable cutter member thus to cause the latter during its movements to bear against and be guided accurately by the flat wall of the slot.

2. A thread cutting temple comprising the construction defined in claim 1 in which the said blade is secured to the head with the body diverging slightly from the adjacent wall of the slot toward the front whereby contact of the cutting edges of the movable cutter member and the blade is assured.

3. A thread cutting temple comprising the construction-defined in olaim l in which the means for securing the blade shank to the head provides for adjusting the blade laterally of the slot thus; to adjust pressure thereof on the movable cutter member.

In testimony whereof, I have signed my name to this specification.

EDWVARD S. STIMPSON 

